Skyveil Cloudlands Pass 10

Added storm electric-field safety and conduit behavior:
- Active charged rain clouds can periodically shock players during thunderstorms when players are inside their exposed electric field.
- Default shock damage is 1.0 health every 20 ticks while conditions are active.
- Waxed copper blocks touching the six adjacent sides of a charged rain cloud contain its invisible electric field.
- If all six sides are waxed copper, the field is fully contained and emits no remote field.
- If one or more sides are missing, only the exposed side directions emit remote redstone power and shock field.
- This is intended to let players shape natural storm power into directional conduit/powerline builds.

New config keys include:
charged_field_waxed_copper_containment
charged_field_exposed_sides_only
enable_charged_field_shock_damage
charged_field_shock_damage
charged_field_shock_interval_ticks
charged_field_shock_search_radius
charged_field_shock_requires_thunderstorm
